Drainage pit



FIG. 1 is an isometric view of a drainage pit according to our invention,

FIG. 2 is a top plan view thereof,

FIG. 3 is a bottom plan view thereof,

FIG. 4 is a side view thereof, the opposite side being a mirror image thereof,

FIG. 5 is an end view of one end thereof; and,

FIG. 6 is an end view of the opposite end thereof.

The broken line showing is to illustrate portions of the article and forms no part of the claimed design. 

The ornamental design for a drainage pit, as shown and described. 